1011 past contests
Topic 62 · Possible frequency of a second note from a given beat frequency
Topic 2 · Surface gravitational field strength of an isolated sphere from its mass and radius
Topic 41 · Magnetic susceptibility of a paramagnetic substance from curie's law
Topic 63 · Fundamental wavelength of a string clamped at both ends
Topic 47 · Numerical aperture of a step-index optical fibre from core/cladding refractive indices
Topic 4 · Heat generated from a decelerated projectile's lost kinetic energy
Topic 11 · Angular speed of a celestial body from its rotation period
Topic 62 · Speed of sound from the fundamental frequency of a pipe closed at one end
Topic 3 · Total mechanical energy of a load lifted at constant speed
Topic 56 · Riddle: the moving-coil galvanometer, adaptable into an ammeter or voltmeter
Topic 61 · Shm kinetic and potential energy trade off while total mechanical energy stays constant (true/false)
Topic 61 · Total energy of an shm oscillator is constant, not zero, at equilibrium (true/false)
Topic 61 · Shm maximum kinetic energy occurs at zero displacement (true/false)
Topic 10 · Boyle's law: halving volume at constant temperature requires doubling pressure (true/false)
Topic 12 · A derived quantity is composed of products of powers of base quantities (true/false)
Topic 31 · Doubling pressure at constant volume requires doubling absolute (kelvin), not celsius, temperature (true/false)
Topic 12 · Length, time and mass are base quantities; speed is derived, not base (true/false)
Topic 12 · Speed is a derived, not base, quantity (true/false)
Topic 41 · Torque on a current-carrying rectangular coil in a magnetic field parallel to one side
Topic 21 · Photon energy absorbed for a quantum transition between two given energy levels